Motor vehicle heater



H. HUEBER'l MOTOR VEHI CLE HEATER 1-"eb. v 7, 1939.

Filed oct. 11, 1952"v 2 sheets-sheet 1 Feb. 7, 1939. H. HUEBER v MOTOR VEHICLE HEATER Filed oct. 11, 1952 2 sheets-sheet 2 l Patented Feb. l7,r :1939l fum-TED STATESA PATENT ori-ICE i 2,146,216 Moron VEHICLE HEATER non!! mieter, maaien. Y., assignmto Tric Products Corporation, Builalo, N. Y.

Application october 11, 1932, serial No.' 637.307

. 4 claims. 1 rl'his invention relates toheaters for motor vehicles and itv has particular relation to the mountl exhaust'conduits, and provided with a suction operated turbine driven by power generated by the suction in an intake manifold of an internal combustion engine of th'e v ehlcle.

lAnother object of the invention is to provide 'l5 a heater having itsheating uid supplied either in gaseous form from the exhaust conduits or fin liquid'for'm from the engine water cooling'system of an vautomobileand including operative connections lto the vehicle fan belt-for driving a device 'for circulating air through the heater and1 in 'a compartment oi the automobile to be heated.

- Another object of the invention is to provide a heater including an improved construction particularly adapted to radiate heat from heated th heater. p l

' Inthedrawingsz' Y Fig. 1 'is a fragmentary elevation of a front portion of the motor vehicle having a heater l iiuid.passingfromanautomobile engine through y 3i)A Vshwl'l in side. elevation thereini Fig, Z'isf'a' partial elevation on a larger scale, of a heater element with portionsbroken `away and shownin cross section;

Fig. 3 is a front elevation ora iluidturbine for operating an aircirculator and having aportion `broken away for the sake oi' clearness;

Fig.' 4 isa 'cross section taken substantially along .the line IV--IV of. Fig.v2;

Fig. 5 is44 a fragmentary elevation' of 'another form' oi the invention; and

Fig. 6 is a ditic front.elevation ofthe i fan and fan belt moimti'ns lcuniloyed i'or driving the device shown in Fig, 5.,

Y Referring to Figsyi to 4, a'heater I is mounted 4,5 upon a dash Il o! a motor vehicle II, and'comprises a heatk transfer unit in the 'form of a icasting I2 provided vwith an annular chamber-I3 hav v ing opposed curved 4arcuate wall portions- I4 which form staggered or alternately arranged 50 pointed crests Il 'extending inwardly or the chamber. These 'crests serve 'as bailles to agitate the viiow, of iluid through the chamberand to directsuchfiluidinanirregularpath. Two sets lof rigid iins II .and I1 are formed integrally and o! the .chambenwallsof the casting and surround three sides thereof. The front side of the heat transfer unit adjacent the dash is closed by an integral radial annular wall I8 extending from the chamber walls routwardly 4to the radial extremities of the fins. It will be `f; observed from Figs'. 2 and 4 that the iins I6 are provided .with radially inwardly oilset extensions I9 and that all of the ns extend axially in uniform relation about the rear portion of the chamber I3. The entire casting including the iins and l0 wall I8 is unitary and is made in one casting operation. It is to be understood that the terms front and rear are mentioned with reference to the front and rear of the motor vehicle.

An annular channel-like shield 20 receives the 15 axially plolentlng portions lof the iins I6 and I1 fitted closely therein and the inner shield flange 2| abuts the edges of the radial extensions I9 of the ns I6; This shield is secured in the position shown by springing its flanges over the 20 fins I1 or by soldering it to the fins. Thus it can be'removable if desired. This arrangement pro-I vides passageways 22 opening from the peripheral portions of the casting about the iinsand extending about thewalls of the chamber inside the 25 channel shield 201through the central portion of y the transfer unit I2. v

' A plate 23 of disc-like form rigidly secured to the front wall I8 of the casting covers the chamcallyopposite portions of the chamber I3. A' pair .35

of conduits 3| and 32 are connected to a source of iluid which is in the form oi' liquid supplied from the water circulation system of the motor vehicle engine 33 or in the form of air from the exhaust manifold. Heating-medium utilized from either of these sources is known and hence spe.- ciflc description of the manner in which heated 1 fluid is directed through the conduits 3l and 32 is not necessary.

-An -angular bracket l! has its opposite end portions tting over the nozzles, and nuts 36 fare threaded upon the nozzles to clamp the plate iirmly upon one side o! the dash I0, as well as to 1' position substantially centrally of the annular shield 20, and its other end extending through an opening 50 in the dash. A shaft 52 is journalled in the bearing 31 and rigidly supports a blower, shown in the form of a fan 53, centrally of the shield 20 adjacent the inwardly projecting' portions |9 of the fins |8. A coupling member 55 is secured to the end of the shaft 52 opposite the fan and is connected by means 4oi a pin 56 to a similar coupling member 51 which is secured to a shaft 58 of a fluid turbine 59 that is supported by a bearing 60 carried by the central portion of the angular bracket 35. A turbine rotor 62 including blades 63 is rigidly mounted upon the end of the shaft 58 by means of a suitable connection 95 that abuts the bearing 60.

`Complemental housing sections 66 and 61 providing a casing 68 of the turbine, enclose the rotor 62 and the central portion of the housing section 95 is clamped between a shoulder 89 of the bearing and the bracket 35 by means of a nut 10 threaded upon the bearing on the side of the bracket opposite the shoulder 59. The sections S6 and 81 are partially telescoped, as indicated at 12, and secured together by any suitable means. A nozzle 13 secured through the wall of the section 81 and extending toward the adjacent blade of the rotor 62 is provided for directing a jet of fluid against the blades 63. Another portion of the housing section 61 has a tubular iluid connection 15 to a suction tube 16 that is in communication with the intake manifold 11 of an internal combustion engine 33 of the vehicle. A valve 18 connected to a exible rod 19 that is enclosed in a flexible tube 80 extends through the dash and through an instrument board 82 of the vehicle where it is provided with a manually operable knob 83 for controlling the flow of fluid through the fluid connection 15.

By placing the casing 68 in communication with the intake manifold and thereby exhausting the air therefrom additional air under atmospheric pressure impinges upon the blades 63 through the nozzle 13 and operates the turbine which in turn drives the fan 53. Thus air is circulated by the fan through the passageways 22 around the chamber I3 for heating the interior passenger compartment of the vehicle.

In the form of the invention shown in Figs. and 6, a heater 9 is constructed and arranged in the same manner as the heater 9 shown in the other figures,y and hence, the same reference characters are employed to desgnate the corresponding parts. However, the shaft 58 instead of being connected to a turbine is connected to a flexible shafting 95 that is enclosed in a flexible tube 86 and is mounted in a bearing 81 carried by the bracket 35 of the heater. The end of the flexible shaft 85 rigidly supports a pulley 88 that has a journal connection 89 to one endl of a level 90 and the other end of the lever is connected to a flex- 'ible member 92, such as a cable, that is trained about a pulley 93 carried by the vehicle. This cable is accessible to the vehicle operator in substantiaily the same manner as the knob 83. An intermediate portion of the lever has a pivotal connection 95 to the vehicle. One end of aspring 96 is connected to the end of the lever to which the flexible member 9-2 is connected and extends in a direction opposite the latter forconnection to a pin 91 carried by the vehicle. The spring is normally under tension and tends to swing the pulley 98 into engagement with a fan belt 90 of the vehicle'engine. Thus the fan belt vis operated by the engine crank shaft 99 that carries a pulley |00 for transmission of power through the belt to a pulley |02 of the engine fan |03. By manipulating the flexible member 92 against the action of the spring 96 and adjusting it, the pulley is disengaged Afrom the fan belt. Conversely, by releasing the flexible member or relieving the tension thereon, the spring 96 holds the pulley 88 in 'contact with the fan belt and hence the air circulating fan 53 is operated through the flexible shafting 85.

Althoughonly the preferred forms of the inJ vention have been shown and described in detail, it will be apparent to those skilled in'th'e art that the invention is not so limited but that various changes may be made therein without departing from the spirit oi' the invention or from the scope of the appended claims.

What is claimed is:

l. In a heating device, a heat transfer. unit formed with a fluid circulation chamber therein, fluid circulating conduits connected to thel transfer unit for supplying heating uid, a series of heat radiating fins extending integrally from the walls of the 'circulation chamber, a' plurality of said finsliaving inwardly offset portions, and a channel-like shield fitting over portions of the fins and having one of its edges abutting the ofiset fin portions.

2. Ina heating device, a heat transfer unit formed with a. fluid circulation chamber therein, the inner walls of said chamber having arcuate inwardly directed portions forming crests for agitating the ow of fluid through the chamber, fluidcirculating conduits connected to the transfer unit, a series of heat radiating fins extending integrally from the walls of the circulating chamber, and a channel-like shield fitting over the lns to form passageways therewith about the chamber.

3. In a heating device, a one piece hollow casting of substantially ring-like form and having front and rear sides, a series of heat radiating fins extending integrally from a major portion of the casting surface, a radial wall defining the front face of the casting, means for supporting the casting along said radial wall, a plurality of the fins having extensions radially inwardly beyond the others, and a shield fitted over a Dortion of the fins auf?y abutted against the n extensions to form passageweys with the fins, said passageways opening inwardly and outwardly in radial directions from the bod', of the casting.

4. In a heating device for a motor vehicle, a. heat transfer unit fcr'medwith a fluid circulation chamber therein, a wall support carrying said unit on one side thereof, said transfer unit having nozzles thereon extending through the wall, fluid circulating conduits for circulatin!T heated fluid through the nozzles and in the transfer unit, a bracket formed with an outwardly offset intermediate portion mounted in opposed relation to the heat transfer unit on the opposite side of-'fthe wall, means for clamping the bracket and transfer unit toward each other against the wall, said transfer unit including a bearing extending through the central portion thereof and through the wall, a second bearing mounted in the-'bracket in alignment with the first mentioned bearing, a pair of shafts mounted ln'the bearings and having a coupling connecting them between 'the' bearings, an air circulating fan'mounted upon. one of the shafts, and means mounted vupon said second@ shaft and ian.v 

